US1451482A - Typewriting machine - Google Patents

Description

Apr. 10, 1923 1,451,482 J. WALDHEIM TYPEWRITING MACHINE Filed Juneee, 1920 f-:'f 2.o" .2.7 "vf A im" Y di im' y 2J -JJ @JON /J` fJ- /ll /4 27 /f 4J a .l

4. Ji W `/J l-w f I l MVM y Patented Apr. 10,1923,vk i

UNITED 'sr JOHN WALDHEIM, or Errzaisn'rn, NEW JnnsnuplnssreNoNfro U-Ninnnwoon TYPE- WRITER COMPANY, or New YORK, N. Y., a CORPORATION or DELAWARE,

i f 'rYrfEwnrrrNe MACHINE,

.innemenv :nea annees,iezo'fseiai110.1391319'. y

To all .whom it may concer/a;

Be it known that I, JoHN VAipHnrM, a y

knear the ,middle ofthe .,machine, and showcitizen of `the United Statesresidin Iin Elizabeth, in the county of Union 'and tateL of New'Jersey, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a' specilication.v` o y Thisinvention relates to typewriting machines, and especially'to tabulating mechanism' therefor. v

yHeretofore, diculty has been experienced in correctly locating they carriage in the "selected denominational position,` this ybeing l due to the fact that at one time thetabulaey ing mechanism is operated to select' a position in asucoeedlng column after an operated type-bar returns to its normal position,

and that at another time the tabulating mechanism is operated before the return `oi. the type-bar. 4This causes different relations to exist betweenthe loose dog andthe es- Oa'pement wheelv of the carriage escapement .mechanism at times when the tabulating mechanism is operated, which results inincorrectly positioning the carriage byone letter-space when lthe carriageescapement mechanism is in an abnormal position".A f

To overcome' this, it has been proposed to render the tabulating mechanism ineffective by locking it until the type-key, and consequently'the escapement mechanism. has been restored to normal position. VIn such devices, the speed of thetypist lis retarded, which results from the fact that the tabulatorkeys are ineffective or out of use until the type-key returns to normal position. f

An objectv of the present invention is to insure the correct positioning of the Acarriage without rendering the tabulating mechanism ineffective, lso as not to interferewith the speed of the typist.

In carrying out the invention, there is pro'- vided means to insure the same relation 'between the Yescapement wheel andthe idogrocker, irrespectivev of the condition `ofthe type-bar when a "tabulator' key is operated.

To this end. a connection may be made beeV tween the ltabul'ating mechanism and the dog-rocker of the escapement mechanismv to rock said dog-rocker, to' movethe' loose dog out 'ofengagement with the escapement wheelv at each depression O a tabulator key.

Othery features and advantages will lhere-- b?" nafter'appear, p

In the ,accompanying drawings, l y, Figure lisa sectional side'elevation taken ing` the invention applied thereto.

Figure 2 is a. skeleton .diagrammatic view,

showingthe tabul'ating mechanism operated to release the carriage andfgthe dog-rocker roperated to move the loose dog` out ofV engagement with the escapement wheel.

' Figure 3 isa detail Jiront view of the ejs- `capement mechanism, showing the' parts lin their normal positions.

Figure L1 lis a view similar to Figure 3,

showing'the parts in position when theuplu per endfof the dog-rocker isf-Operated.

The invention yis hereinfshownas ,applied to anUnderwood typewriting machine, 1n

which character keys 10, when operated, depress l'feylevers 1.1 to lrock belly-cranks 12 yabout affulcrumlrod 13, to swing'the typelto therighthand end of the carriage 20 by a strapf25.`-The letter-feeding movements of the! carriage are e'ected by-a universal bar 26 operated at each type-stroke by heels 27 kon the type-bars. The heels 27 kmove the universal .barrearwardly against a return spring (not shown) toa'ctuatefa\-dogrocker 28 to reciprocate `a loose/dog 30 and a xed dog 31 between the teeth 320i an escapement `wheel 33.' the llatter having the usual one-way pawl-drivingconnection 34 with a.

pinion'B. which meshes with a feed-,rack y36 4pivotally Vmounted at- 37 on the typewriter cz'irriage."y y -f M i The loose dog 30 is-normally in engagement -with one ofthe teeth32 of the escapement Y Wheel-33 (Figures 1 yand-3), and is held, by

the escapement wheel, against-a xed stop 38 on the dog-rockeriQS ra'ndagainst the tension o-as'pringOi- "When the universal bar 26 is operated, the loose dog 30'moves out of engagementwithlthetooth 32, andthe fixed y dog31is brought into the pathof the dis-Y engaged tOOth .-.32 ',(Fi'gures 2 and' '4) while the loose dog is "swung about lts pivotv 41',

by the spring 40, to the position in Figure 4, where it is arrested against a.. fixed stop 42. When the type-bar 14 returns, the universal bar 26 also returnsk and permits the dogrocker 28 to be swung about its pivot 43 by the spring 40, which is diagonally disposed in the usual way, to have a lateral pull on the loose dog 30 and a forward pull onthe dog-rocker 28. When the dog-rocker returns to normal; position lfrom the-positionindicated in' Figure 4, the loose dog 30 is brought into the path of ythe next. tooth 82 ofthe escapement, wheel, while the fixed' Ydog 31 moves .out of engagement with the tooth 'previously engaged by the loosezdog. As soon as the fixed dog 31 moves outy of en- Agagemeiit with 'the' esca-.pement wheel, the

carriage 20 is free kto 4move until the loose Ydog-30 is arrest-ed against the stop 38, as

shown inFigure 3, vthus. effecting a letterspace movement of the carriage.V

Tabulating mechanism, vshown herein, may

beflile that, disclosed in the lpatent to J. C.

i McLaughlin, No. 956,144 of April 26, 1910.l

and may-,comprise a plurality of denomination-selecting keys 44, each being provided with a key-lever 'to be swung about a lpivot46, to raisea plunger 47, having at its upper end a denomination-stop 48, which is brought intothe path of column-stops 50 adjustably mounted :on a stop-bar 51, the latter beine' supported on the typewriter carriage 20. lVhen a tabula-tor key 44v is operated, the carriage-is released by means of a -iiniyersal bar 52', engaged by any one of the plungcrs v47, to rock a shaft 53 and pull downwardlyon a link 54, connected to an armv extendingy from said shaft. The upper.v end ofthe link 54 is connectedto a lever 5,6, which is swung about its pivot 57 to raise the feed-rack 36 out of mesh with the` pinion 35V, bymeans of a roller 58 mounted at the forward end of said lever. Then the carrige is thus released, it is moved leftwa-rdly byv the spring-drum 24 until arrested inthe selected? position by the column-stop :,and the operated denomination-stop or s counter-stop 48.

Ordinarily vthe tabulator key is operated vwhenthe escapement' devices are in their normal: positions; In' practice, yit frequently happensithatl the typist,in rapidly operating the machine, actuates the tabulator keyl 44 beacoiev the type-key 10: returns to its normal position and l f while the escapementI devices, which are under the4 control 'of the type-keys, are in -theiroperated positionsf, This results in incorrectly positioningthe carriagel 2O by one letter-space. To illustrate, letY it beassuined that: they llast.` digit in a column is being typedfand 'thefftypisty desiring to tabulfata:the-#carriage to the hundreds; position Ofithe next; column-,r depressesfethe .hundreds tabiilator:.lreyfbefore;fthewftypeakey-aad the' "escapement devices return. The carriage, .in-

wheel while the feed-rack 36 is out of engagement` with the pinion `When the carriage is released under abnormal conditions, thatcis, when the dog-rocker is held in its opera-ted position by the operated type-key while a i'abulator key is beingioperated. the loose dog is out of engagement with thev escapemeni' wheel and in a position to engage `the nextvsucceedine tooth 32 of the esca nement D wheel; consequently, an added movement of one letter-space of the carriage is e-Hected-as the counter-stop 4S moves out of engagement with the column-stop 50 .subsequentlyy to the ire-engagement of the feed-rack with the escapement pinion, thus causingan incorrect positioning of the carriage.

Tin-guard against the incorrect positioning of the carriage. there is provided an upwardly-proiecting arm GO on the carriage-release rock-shaft 53,- which is moved forwardly when a tabulator key is operated, and enthe rear face of the dog-rocker 28 below its pivot 43 (Figure 2), to swing the upper end of the dog-rocker rearwardly, to .move theloose dog 30 ofthe escapem'ent mechanism ont of engagement with the escapeinent wheel 33, thus insuring that the same relation will exist between the loose d and the esca peinent wheel at each. tabulat generation. irrespective of the condition (effective or ineHective) of the typekey.

l-Vith this arrangement, the carriage always moves one space further when the loose dog-30 ire-enga the eseapement wheel than itwonld under ordinary conditions. Conscf qnently, the stop-har 51, which may beprovided with a scale for setting the stops 50.

may-,be seti one lettf-zr-space in advance of ythe -usualposition so as to allowk for the extra vletter-space movement of the carriage during a tabulating operation. Y

It will be understood that, with this arrangement,.the speed of the typist, in' operating the machine, is not hindered.

Variations may be resorted to Withinfthe scope-of the invention, and portions of the improvements maybe used without others'.v

Havinghthus' described my invention,` I claim: f l

1. In a typewriting machinefthe combination of a carriage, tabulating mechanism .for

iao

said carriage, type-keys, escapement mecha-- nism actuablev by, said type-keys, and means operable by said tabulating mechanism to actuate said vescapement mechanism.

y 2. In a typewriting machine, the combinav tion of a carriage, escapement mechanism for said carriage, said escapement mechanism comprising a dog-rocker, `tabulating mechanism, and means operable by said tab-rk ulating mechanism to operate said dogrocker. i

y3. In a typewriting machine, the combinaytion of a carriage, type-keys, a dog-rocker having a fixed dog and a loose dog thereon,

means to be engaged by the ldogs to feed said carriage `when the type-keys are operated, tabulating mechanism, and means operable by said tabulating mechanism to operate said dog-rocker to move the loose dog out of engagement with the engaging means when the tabiilatingmechanism is opera-ted.vv

4. In a typewriting machine, the combination of 'a carriage, type-keys, escapement mechanism comprising ka iixed dog and a loose dog, means to be engaged by said dogs to feed said-carriage When the type-keys are operated, tabulating mechanism,4 and means operable by said tabulating mechanism to,

cause the loose dog to bear the same relation to the engaging means When the tabulating `mechanism is operated as when atype-keyv is operated. l

5. In a typeWriting-machine, the combination of a carriage, es'capement mechanism for said carriage, type-keys to operate said escapement mechanism, tabulating kmechanism for said carriage, carriage-releasing mechanism operable by said tabulating mechanism, and means operable by said tabiilating mechanism through said carriage-l releasing mechanism, for operating said escapement mechanism. Y v

6. In a typewriting machine, the combination of a carriage', escapement mechanism.

for said carriage, said escapement mechanism comprising a ldog-rocken type-keys. to

ing mechanism for said carriage, carriagereleasing mechanism operable vbysaid tabulating mechanism, said carriage-'releasing mechanism comprising a rock-shaft, and an operate said escapement mechanism, tabulaty mechanism, carriage-releasing means oper-V able4 by said tabulating mechanism, and means also operated by said carriage-releasing means to move the loose dog to itsineffective position.

8.v Ina typewriting machine, the Vcombination of a carriage, carriage-escapement mechani'sm comprising two co-operating elements, namely, an escapement Wheel and a loose dog normally inengagement vWith. said escapement wheel, tabulating mechanism, means operable by' said tabulating mechanism to release said carriage, and means operable by the tabiilating mechanism through the carriage-releasing means, forV moving n ,one of said elements out of engagement 'With s the other.

9. In a typeivriting machine,the-c0mbina tion of a carriage ,carriage-escapement mechanism Icomprising a loosey dog, tabulating mechanism, meansoperable by the tabulatv ing mechanism to release said carriage, andy means operable by the .tabulating mechanism. through the carriage-releasing means,

for actuating theloose dog.

Y 10. In a typewriting machine, the combination of a carriage, escapement mechanism comprising an escapement Wheel, a loose dog normally in engagement'with said escapement Wheel,v carriage-releasing means operable by said tabulating mechanism, the carriage-releasing means comprising ak rockshaft. an arm on said rock-shaft, and means operable by said arm to move the loose dog out of engagement with the escapementy Wheel.

, JOHN yvviniiniiieiia.

kWitnesses: n f EDITH B. LIBBEY, i CATHERINE A. NEWELL.

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